Windowed Integral Equation Methods for Problems of Scattering by Defects and Obstacles in Layered Media

Citation

Pérez Arancibia, Carlos Andrés (2017) Windowed Integral Equation Methods for Problems of Scattering by Defects and Obstacles in Layered Media. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/Z9GQ6VQT. https://resolver.caltech.edu/CaltechTHESIS:08182016-124629380

Abstract

This thesis concerns development of efficient high-order boundary integral equation methods for the numerical solution of problems of acoustic and electromagnetic scattering in the presence of planar layered media in two and three spatial dimensions. The interest in such problems arises from application areas that benefit from accurate numerical modeling of the layered media scattering phenomena, such as electronics, near-field optics, plasmonics and photonics as well as communications, radar and remote sensing.

A number of efficient algorithms applicable to various problems in these areas are pre- sented in this thesis, including (i) A Sommerfeld integral based high-order integral equation method for problems of scattering by defects in presence of infinite ground and other layered media, (ii) Studies of resonances and near resonances and their impact on the absorptive properties of rough surfaces, and (iii) A novel Window Green Function Method (WGF) for problems of scattering by obstacles and defects in the presence of layered media. The WGF approach makes it possible to completely avoid use of expensive Sommerfeld integrals that are typically utilized in layer-media simulations. In fact, the methods and studies referred in points (i) and (ii) above motivated the development of the markedly more efficient WGF alternative.

Thesis Files